Posts made by mikeardy

Hi at all,
will Codesys be supported on Axon plc? Or will it never be implemented?

(I posted this on CODESYS Forum without any suggestions or help)...

Hi,
I need to read about 250 UDINT via Modbus in Slave mode. A SCADA manages this data and write via Modbus remotely to my controller.
So inizially I configured on my controller a modbus slave device. Due to Modbus limitations I configured 4 channel in Read Holding Registers mode with an array of 125 elements (500 elements in total of WORD type).
In a GVL I defined an array of 250 elements of UDINT type poiting at the starting address of the input registers, beginning at %IW60.
Finally in my application program I used the array poiting values I need directly by index.
Is it the right way or maybe there is a quite simpler or "more readable" and canonical method?
See pictures I added to this post.
Many thanks!

Thank you.
I will try.

@DavidCozens ok - many thanks. I'll wait for you and if I move through some test I'll inform you.

Hi,
I need to configure my Raspberry Pi, that handle valves and controls, as a TCP Modbus Slave.
The problem is that the application is a porting of another application and for compatibility I need to leave the same Modbus registers.
I need to configure an array of 600 elements of DINT contiguous, another area configured like array of 600 elements of REAL, a 600 bit array area and some other bits distributed in different other areas.

I have configured the system as the following image illustrates...

I have the following questions:

*** the controller can act at the same time as a master and as a client in Modbus TCP?

*** how can I set the right Modbus area to be available exactly as previous ones?
For me isn't so clear the area configuration in the left side of the configuration Modbus windows. I checked the "Modbus TCP Slave Device I/O Mapping" but is not clear for me how to proceed to configure addresses I need.

Thanks

ok I will try to use the /home/pi/ folder.

@tomas_hora said in SFTP access to Neuron directories:

@mikeardy what about /tmp/

There is an issue! When the Neuron gets power outage and restarts again the /tmp/ folder is restored to its default that is an empty folder and in this way the config file is lost...
I need the file must remain available in the SD.

@tomas_hora said in SFTP access to Neuron directories:

@mikeardy what about /tmp/

IT'S FANTASTIC!
IT WORKS!
Thanks!

Hi,
no matter about the folder.
If you suggest me a specific folder I could write a CODESYS sketch to be directed in that folder. I think.

@tomas_hora I configured Filezilla to connect in SFTP with user: pi and password: raspberry, the same I used to connect via SSH Putty terminal.

I'm using UniPian Neuron OS 2018-03-07 with CODESYS.
I have been written correctly a CODESYS PRG capable to write and read files into the root directory.
Why is it not possible with SFTP with regular access?

Hi,
for an application, I need to access the directory of the Neuron to write down remotely a file in a folder.
I found this:

https://www.raspberrypi.org/documentation/remote-access/ssh/sftp.md

With Filezilla it works but I get always access denied when I tried to modify a file (copy it into a directory, delete it, rename it). I can only copy it from Neuron to my local PC and no more.

Could someone help me?
Thanks

thank you

@tomas_knot said in Neuron S103 and fast input (or counter):

Reading the counters would be your best bet; I'm not sure if interrupts are supported in the current CODESYS implementation.

Ok,
have you some examples? Is there a possibility to reset the counter and read it again in subsequentially step?

Hi,
for an application, I'm evaluating the possibility to catch fast pulse input signals.
In CODESYS I need to count them by a native internal counter or via interrupt routine.
Could someone help me?

Hi.
I need to set a static IP address on Neuron wired in ethernet.
I followed some indication and link for Raspberry PI without any success.
I changed some settings in dhcpcd.conf file:

After reboot (sudo reboot command) the Neuron gets again a dhcp ip address.
Could someone lights my way?
thanks.

Hi.
I'm searching for a Modbus expansion module capable of carries a set of digital I/O and an RS232 com port.
Could someone help me?

Hi,
I need to know if there are possibilities to:

• Enable some variables to be retainable and maintain their value in case of power outage

• If is possible and how to use WiFi and/or bluetooth wireless connectivity

Thanks at all

Many Thanks!

Hi,
for a my project I need to connect a device that can communicates only in RS232 and I'm asking for possibility to use a RS232/USB converter connected directly to USB ports of the Neuron.
I'm using CODESYS.
Could be possible to drive this device?
Thanks.